Water, fertilizer and pesticide integrated spraying device for greenhouse vegetables

The utility model discloses a greenhouse vegetable water, fertilizer and pesticide integrated spraying device, which relates to the technical field of agricultural spraying devices, and comprises a support frame, the inner cavity of the support frame is fixedly connected with a fixed plate, and the inner cavity of the fixed plate is fixedly connected with a liquid storage tank. A first motor is started to enable a threaded rod to rotate, so that a fixed square column moves upwards, a telescopic pipeline moves upwards under the action of the fixed square column, so that a spray head moves upwards, and after the height is adjusted, first liquid enters an inner cavity of a liquid storage tank under the action of a concentration adjusting device; meanwhile, clean water is added into an inner cavity of a liquid storage tank through a water inlet, a rotating rod is rotated by starting a motor II, so that a stirring rod is rotated, liquid is fully mixed under the action of the stirring rod, the mixed liquid enters a